OF THE DIRECTION AND FORCE OF THE WIND. 



65 



The above results for the resulting direction of the wind in each mouth, when 

 expressed to the nearest half point, are contained in the following table :— 



First ■ 



1857 



1858 



Resulting Direction op the Wind. 



1858 



Second year. 



1859 



For the combination of the monthly results to quarterly, half-yearly, and yearly 

 results, we have to double the numbers for R s and R^ for all months in which but 

 6 observations a day were taken, in order to make them correspond to the numbers 

 for the other months in which 12 observations a day were recorded; the latter 

 number of observations having been adopted as standard. The numbers in the 

 second column for April, 1858, were doubled and added to the corresponding num- 

 bers in column one, before the formula was applied. 



The following table contains the resulting values for R s and E w as they resulted 

 (or in part were referred to) from bi-hourly observations : 



